Mad Max Fury Road. They defeat the tyrant, and get the control of the water valves. Then they open the valves and seemingly keep them open. One problem, how long is the water reservoir gonna last now?
Logan’s Run. The city dwellers are freed from the computer’s iron-fisted rule, and Carrousel. But their city is in ruins, and thinks to the computer providing everything. They don’t know how to live without it. The city dwellers are going to start dying off real fast.
In Small Soldiers, the whole problem starts when a corporation being lazy and and lacking any regulation puts military grade AI chips in a bunch of children’s toys. In the end, the CEO flies in on a helicopter, writes everyone a check for their silence, and fucks off scot-free.
It’s not a happy ending, but quite realistic.